A unified non-empirical strength model

A unified non-empirical strength model

Blog Article

Strength, as an important indicator of structural materials, has always been an important research topic in materials science.Theoretically, building a strength model is a rewarding method to understand the relationship between the mechanical properties and microstructure of materials.Although TRIPHLAX-750 many strength models can reduplicate experimental values very well, they are empirical models, and their applicability is limited to materials for which empirical parameters have been obtained.

Here, a non-empirical strength model is proposed based on the two-dimensional (2D) displacement potential of dislocation slipping, which can be applied to different chemically bonded crystals.Owing to the large electron localization function (ELF), covalent and ionic crystals have a high 2D displacement potential of dislocation slipping, and their dislocation slip mode prefers the kink-pair mode, further exhibiting a high critical resolved shear stress (CRSS).In contrast, metallic crystals with a small ELF have a low 2D displacement potential of dislocation slipping, and their dislocation slip mode is ORG KIMCHI more inclined to the string mode, showing a low CRSS.

This work provides new insights into dislocation-slipping configurations that will be useful for the development of new high-performance structural materials.